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參數(shù)資料
| 型號： | MC74ACT245NG |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 通用總線功能 |
| 英文描述： | Octal Bidirectional Transceiver with 3−State Inputs/Outputs |
| 中文描述： | ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDIP20 |
| 封裝： | LEAD FREE, PLASTIC, DIP-20 |
| 文件頁數(shù)： | 4/10頁 |
| 文件大小： | 122K |
| 代理商： | MC74ACT245NG |
MC74AC245, MC74ACT245
http://onsemi.com
4
AC CHARACTERISTICS
(For Figures and Waveforms See AND8277/D at www.onsemi.com)
Symbol
Parameter
V
CC
*
(V)
74AC
74AC
Unit
Fig.
No.
T
A
= +25
°
C
C
L
= 50 pF
T
A
= 40
°
C
to +85
°
C
C
L
= 50 pF
Min
Typ
Max
Min
Max
t
PLH
Propagation Delay
A
n
to B
n
or B
n
to A
n
Propagation Delay
A
n
to B
n
or B
n
to A
n
3.3
5.0
1.5
1.5
5.0
3.5
8.5
6.5
1.0
1.0
9.0
7.0
ns
35
t
PHL
3.3
5.0
1.5
1.5
5.0
3.5
8.5
6.0
1.0
1.0
9.0
7.0
ns
35
t
PZH
Output Enable Time
3.3
5.0
2.5
1.5
7.0
5.0
11.5
8.5
2.0
1.0
12.5
9.0
ns
37
t
PZL
Output Enable Time
3.3
5.0
2.5
1.5
7.5
5.5
12.0
9.0
2.0
1.0
13.5
9.5
ns
38
t
PHZ
Output Disable Time
3.3
5.0
2.0
1.5
6.5
5.5
12.0
9.0
1.0
1.0
12.5
10.0
ns
37
t
PLZ
Output Disable Time
3.3
5.0
2.0
1.5
7.0
5.5
11.5
9.0
1.5
1.0
13.0
10.0
ns
38
*Voltage Range 3.3 V is 3.3 V
±
0.3 V.
Voltage Range 5.0 V is 5.0 V
±
0.5 V.
DC CHARACTERISTICS
Symbol
Parameter
V
CC
(V)
74ACT
74ACT
Unit
Conditions
T
A
= +25
°
C
T
A
=
40
°
C to
+85
°
C
Typ
Guaranteed Limits
V
IH
Minimum High Level
Input Voltage
4.5
5.5
1.5
1.5
2.0
2.0
2.0
2.0
V
V
OUT
= 0.1 V
or V
CC
0.1 V
V
IL
Maximum Low Level
Input Voltage
4.5
5.5
1.5
1.5
0.8
0.8
0.8
0.8
V
V
OUT
= 0.1 V
or V
CC
0.1 V
V
OH
Minimum High Level
Output Voltage
4.5
5.5
4.49
5.49
4.4
5.4
4.4
5.4
V
I
OUT
= 50 A
*V
IN
= V
IL
or V
IH
I
OH
24 mA
24 mA
4.5
5.5
3.86
4.86
3.76
4.76
V
V
OL
Maximum Low Level
Output Voltage
4.5
5.5
0.001
0.001
0.1
0.1
0.1
0.1
V
I
OUT
= 50 A
*V
IN
= V
IL
or V
IH
24 mA
24 mA
4.5
5.5
0.36
0.36
0.44
0.44
V
I
OL
I
IN
Maximum Input
Leakage Current
5.5
±
0.1
±
1.0
A
V
I
= V
CC
, GND
I
CCT
Additional Max. I
CC
/Input
5.5
0.6
1.5
mA
V
I
= V
CC
2.1 V
I
OZT
Maximum
3State
Current
V
I
(OE) = V
IL
, V
IH
V
I
= V
CC
, GND
V
O
= V
CC
, GND
5.5
±
0.6
±
6.0
A
I
OLD
Minimum Dynamic
Output Current
5.5
75
mA
V
OLD
= 1.65 V Max
I
OHD
5.5
75
mA
V
OHD
= 3.85 V Min
I
CC
Maximum Quiescent
Supply Current
5.5
8.0
80.0
A
V
IN
= V
CC
or GND
*All outputs loaded; thresholds on input associated with output under test.
Maximum test duration 2.0 ms, one output loaded at a time.
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